Truck whose contents can be emptied without handling; the front end of the platform can be pneumatically raised so that the load is discharged by gravity (synonym) dumper, tipper truck, tipper lorry, tip truck, tipper (hypernym) truck, motortruck A dump truck (or, UK, dumper truck) is a truck used for transporting loose material (such as sand, gravel, or dirt) for construction. A typical dump truck is equipped with a hydraulically operated open-box bed hinged at the rear, the front of which can be lifted to allow the contents to be deposited on the ground behind the truck at the site of delivery. In the UK and Australia the term applies to off-road construction plant only, and the road vehicle is known as a tipper, tipper lorry (UK) or tip truck (AU).